29x35x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking edge® features a 5

edge® features a 5

This allows the end user to mix for white light with specific frequencies to aid in vegetative and flower growth

500K 47″ x 24″ x 2¼” 28 lbs 48½” x 26½” x 4″ 30 lbs 1

Suitable for all growing styles

Effective for aphid control

29x35x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking edge® features a 5Nordic Pure Custom MERV 14 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition